the timber bench on the bank of efra river, frasco, valle verzasca, switzerland

alps baseflow bench bottom boulder conifer coniferous della ecotourism efra environment europe flow forest frasco highland landmark landscape larch lepontine locarno low marcia mountain nature old panorama poncione resort riale river rock scenery sightseeing spring spruce stone street switzerland tessin ticino timber tourism travel tree val valle valley verzasca water woods